It’s fall again, so it is time to consider yet another new version of macOS. This year, it is macOS Catalina, named for a small island off the coast of California.
Apple has pretty much dropped version numbers from its marketing materials, but Catalina is macOS version 10.15, the 16th major release since Mac OS X 10.0 Cheetah shipped way back in March 2001.

Like Mojave before it, Catalina support both Light and Dark Modes, but Apple has added an “Auto” appearance that changes the desktop wallpaper, mode and Night Shift white balance as the day progresses. There are actually eight variants of the default wallpaper, which you can see here.
To see a lot more of macOS Catalina, be sure to check out its page in my Aqua Screenshot Library. Over on Mac Power Users, David and I have published a bonus episode all about Catalina, so be sure to check that out, too.
Catalina is an important version of macOS, both in what it adds, but also in what it leaves behind.
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